GIS & REMOTE SENSING
GIS integrates many different kinds of data layers using spatial location. Most data has a geographic component. GIS data includes imagery, features, and basemaps linked to spreadsheets and tables.
What is Vector Data? A Vector data feature it represents shape using Geometry. The geometry is made up of one or more interconnected vertices. A vertex describes a position in space using an X, Y and optionally Z axis. Geometries which have vertices with a Z axis are often referred to as 3D since they […]
Raster data is a matrix of cells (pixels). Each pixel holds a value, representing: Color (in images) Temperature (in weather maps) Elevation (in terrain maps) NDVI or other spectral indices (in satellite imagery)Imagine raster like a photo – zoom in enough, and you’ll see little colored squares. What is Raster Data? Raster data represent real
Downloading Shapefiles: A Complete Guide to GIS Data Access In this tutorial discuss about, How to Download free Geographic (GIS) Shapefile Data in DIVA-GIS. DIVA-GIS is a free web service for downloading mapping and geographic data analysis. Its provide free spatial data for the whole world. It is developed by Robert J. Hijmans. Earlier versions
Spatial Data Models in GIS In Geographic Information Systems (GIS), spatial data models serve as a framework for digitally representing the real world. It defines how different elements of geographic information are structured, stored, and related to each other within a GIS database. These models capture the geometry (e.g., shape, location) and attributes (e.g., name,
Spatial Data Analysis in GIS Spatial Data Analysis is one of the core components of Geographic Information Systems (GIS). It involves examining the locations, attributes, and relationships of features in spatial data through various analytical techniques. The goal is to extract meaningful patterns, trends, and insights that support decision-making and problem-solving. Spatial Data Analysis involves